Rotary brush



Feb. 21, 1933.

C. S. OTT ET AL- ROTARY BRUSH Original Filed April 27 1929 INVENTORS CHARLES j 0T7." Jose/=11. E. BY

Lsn'is 00' A TTORNEYS.

Patented Feb. 21, 1933 UNITED STATES AT OFFICE CHARLES S. O'IT AND JOSEPH R. LEWIS, OF SAN FRANCISCO, CALIFORNIA; SAID J R. LEWIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO' MANUEL EDWARD LEW-IS, OF SAN FRANCISCO, CALIFORNIA ROTARY BRUSI-I- Original application filed April 27, 1929, Serial No. 358,547. Divided and this application filed March 8,

1930. Seria1 No. 434,258. I

The present invention relates to improvements in rotary brushes intended for use particularly in tanks for cleaning ham boiling molds. The present application is a division of application Serial No. 358,547, filed April 27, 1929, on a machine for cleaning ham boiling molds.

The principal object of the present invention is to provide a novel brush particularly intended for use with steel bristles. A further object of the invention is to provide a brush of the character described in which the bristles are mounted in the backing in a particularly firm and rugged manner so as to be able to stand the wear which necessarily is extremely hard in a machine of the character described.

Further objects and advantages of our invention will appear as the specification proceeds.

The preferred forms of our invention are illustrated in the accompanying drawing in which Figure 1 shows a vertical section through a tank having our rotary brush mounted therein,

Figure 2 shows a rotary brush in end elevation, a portion of the brush being shown in section, and

Figure 3 shows a fragmentary section through a modified form of brush in the process of making.

While we have shown only the preferred forms of the invention, we wish to have it understood that various changes or modifications may be made within the scope of the claims hereto attached without departing from the spirit of the invention.

Figure 1 shows one way of using our brush while in the copending application two other forms of brushes are shown which are built on substantially the same principle. The tank 1 which is adapted to be filled to a suitable height with any desired cleansing fluid has a bracket 2 mounted 6 i su po t n th r bracket with reedom of vertical adjustment by of a pin 7 extending through vertical slot 8 in the second bracket, and hrough holes in strad in s-8 of the fir t a ket, what allows thetsecond bracket to be raised' biy interposition ofsnitable shims. The second bracket terminates in two parallel vertical arms 9 carrying-a horizontal shaft 10, which has the brushes 11 mounted thereon. It will be noted that four brushes all 3 3; pro vided, the two central ones being spaced so as to. allow of interposition of a sprocket 12, and the two outer ones being spaced from the two inner ones by the. arms 9 of the bracket. The sprocket 12 is connected through a chain 13 to a sprocket 14 on. the shaft 1 whereby rotary motion of the latter shaft is transmitted to the. brush carrying shaft.

The present invention relates more particularly 'to the particular construction of each brush shown in detail in Figure 2 from which it appears that each brush consists oftwo sections 15 and 16 each being semicylindrical. Each of these sections is made up of a semi-cylindrical metallic sleeve section 17 formed with perforations 18 through which bunches of metal bristles 19 are looped in a manner well known in the art, the bristles radiating from the sleeve section. In order to firmly lock the loops of the bristles in place, a lining 20 preferably of Babbitt material, is placed against the inner face of each sleeve section, the Babbitt material being formed with an axial groove 21 in such a manner that the two grooves of two sections fitted together form a cylindrical bore fitting on the shaft 10 to which the i brush is to be fastened. The sleeve portion of each section may be formed with one or more suitable projections 22 against which the babbitt may be anchored.

Two co-acting sections are drawn together and tightened upon the shaft by means of screws 23, passing through a bore 24: in one section and threaded into a registering bore 25 in the other section, a shoulder 26 in the first bore limiting the movement of the head of the screw, and the latter being preferably made to pass through the anchoring means for the babbitt.

It will be seen that in this manner the bristles are firmly anchored in the backing and cannot possibly work loose. The two brush sections are firmly clamped upon the shaft and the clamping means at the same time joins the two sections into a single unit.

Where it is desired to use a brush having bristles at one end, as for instance, in the vertical brush shown in our co-pending ap plication, the brush may be constructed as shown in Figure 3, in which the end of the sleeve 27 is closed as shown at 28 and in which bristles 29 are inserted in the end piece as well as in the cylindrical section.

I claim:

l. A brush of the character described, comprising an annular backing made in two sections, bristles looped therethrough so as to radiate therefrom, a lining on the inside of each section for holding the bristle loops in place, means for interlocking the lining with the backing and means for clamping the two sections upon a shaft, said latter means passing through the interlocking portions of the lining and the backing.

2. In a brush of the character described, an annular backing comprising twosections, bristles looped therethrough so as to radiate therefrom, a lining on the inside of each section for holding the bristle loops in place, an inward projection on the backing interlocking with the lining and means for clamping the sections upon a shaft, said means passing through the inward projection of the backing.

CHARLES S. OTT. JOSEPH R. LEWIS. 

